Rail drilling and reaming machine.



, E. w. JAcoBs. BAIL DBILLING AND EBAMING MACHINE.

. urmlonlon'runn ooms, moa. 1 l

' `Patented A 9, 1910.

HENRY w. JACOBS, or 'ro1=EKA` KANSAS.

RAIL DRILLING AND REAMING MACHINE.

Specicaton of Letters Patent.

Patented Aug. 9, 1910.

Application led October 15, 1908. Serial No. 457,815.

To all whom it may concern:

Be 1t known that I, HENRY W. JACOBS, of

' Topeka, in the county of Shawnee and Stat of kansas, have invented a certain new ard by which the rails of a railroad may be4 drilled, which machine shall' have among others the following advantages: that of being of light weight considering its strength;

. that of being capable of quick application to and removal from working position so as te be capable of working the 'maximum time between the passing of trains; that of per,- mitting ready vertical and horizontal adjustment of the drill; and to such ends my invent-ion consists in the rail drilling and reaming machine hereinafter specified.

In the accompanying drawings Figure 1 isa plan view of a rail drilling machine embodying my invention; Fig. 2 is a side elevation of Fig. l, the parts being shown in attached position in full lines, and in detached position in dotted lines, and Figs. -3 and 4 are cross-sectional views of details taken respectively through the drill casing l:nd the inner end of the drill supporting My invention is capable of embodiment in many different forms, and while I have chosen that form which I deem to be best, it

is to be understood that the illustrated form is but one of the possible embodiments of the invention. v

In carrying my invention into practice I provide a bar upon which the drill driving devices are mounted. 4Said bar is preferably circularA in cross-section, and it is widened in any desired manner at the end which bears upon the rail 11. A lightand convenient form of widening consists in the arms 12 which branch from the bar. The said arms are bent down at 13 to bear against the outer side of the rail, and are preferably provided .with-hooks 14 to en gage the underside of the head of the rail. A sleeve 15 is slidably mounted on the bar, and such sleeve carries ears 16, which are curved away from each other to form a socket 17, the ears being drawn together by a screw 18 preferably having a handle 19.

The drill driving device proper conslsts of a casing 20 having a hollow cylindrical shank :21 in which is mounted a shaft 22 that is adapted to be connected with a suitable motor, such as a motor on a track car. The`lower end of the shaft projects withinl the casing and is there provided with a bevel gear 23. This gear meshes with a\ bevel gear 24 on a horizontal drill spindle 25 having bearing in a boss 26 on the'casing. lVithin the spindle is a socket 27 that carries the drill 28, or a reamer can be used. The rear end of the socket is adapted to be borne upon by a hand screw 29 threaded in the casing, the rear end of the hand screw having a center 30 which is adapted to bear against an abutment 31. The abutment has a hole to fit over the bar and can be secured in adjusted position by a hand screw 32. By the rotation of the hand-screw 29 the casing 2O as a whole is moved to and from the rail.4 In order to support Vthe rear end of the bar upon the opposite rail and to secure it .in position, such bar is provided 'with a pin 33 which is secured to the bar as-by having a shank that passes through t-he bar, which shank carries a nut 34 that is adapted to be clamped against the bar. The pin is preferably circular in cross-sectiom .and is preferably provided with an anti-friction roller. The said roller is adapted to be engaged by the hooked end of a lever 35, the latter bcing pivoted toa 'bar 36. This latter bar is preferably formed separately from a shank 37 on a fork 38 which is adapted to rest upon the rail, the said bar 36 and shank being connected by a turnbuckle 39. The said fork is formed similar to the arms 12 on the bar 10. The inner edge 40 of the hook 35 is preferably formed eccentrically to the center upon which the lever turns, so that as the antifriction roller travels from the point of the hook toward the seat of the hook, it will be drawn toward the center of motion of the lever.

In the operation of my device the two forks are laid upon the .opposite rails,'thel lever being .in the dotted position of Fig. 2, and theI point of the hook is then engaged with the anti-friction roller. Upon depressing the lever to the full line position in Fig.

2, the anti-friction roller is drawn toward the center of motion of the `lever, and the fingers on the respective forks are drawn toward each other, thus clamping theI device upon the rails. The drill casing 1s then lraised or lowered in the socket 17 or swung about the bar as a center until the drill is pilt in exactly the desired position.' The abutment is then moved up against the feed screw of the drilling device and the drill set in motion. The drill is forced into the web of the rail by use of the feed screw. Iia train approaches during the drilling ofja hole, it is only necessar to throw the lever from the full line position t-o the dotted position. when'the fork 38 can be disengaged from lthe left rail and the'bar 10 swun to vertical position without dist-urb'ng the rill further than to withdraw it from within the hole iffnecessaruv to the surface of the web. The bar l0 and all of its attached arts swing about the upper outer edge o the tread of .the rail as a center. When the train has passed, the fingers 13 are engaged with the outer edge of the rail and the bar 10 swung to horizontal osition, bringing the drillto. working position again, and this without having disturbed the abutment or .the clamp which holds the drill casing. The

fork 38 is then laid upon its rail and the lever again engaged with the anti-friction roller and swung to horizontal posit-ion.

It' will be seen* that my rail drilling machine has amongothers the following aclvantages: It can be made very light. It .can` be very firmly secured to the rails, and. readily' attached and detached therefrom. It permits a considerable range of adjustment of the drillwithout releasing the hold of the device upon the rails.

pivoted to one of said members, a projection 4,5-

upox; the other of said members, and a camsha d-nger on said lever for enga said pro]ection and drawing fit towardt e center of motion of said lever. 'f' a 2. In' a track appliance, the'coxnbinat'iml of members having hooks adapted to engage the outer surfaces of t-he rails, one of said -members being adjustable in length, a lev'er pivotedto one of said members, and a projection on vthe other of said members, -saidy lever having a cam-shaped finger adapted to engage. said projection and draw it toward the center of motion of said lever.I

In testimony that I claim the `foregoing I -have hereunto set my hand.

HENRY W. JACOBS.

Vitnesses: M. L. RHoADEs,

IV. M. ALLISON, J r. 

